Got this warning from visiting one of the threads (aircon removal)
Warning: Something's Not Right Here!
www.mud-club.com contains content from 79.170.44.102, a site known to distribute malware. Your computer might catch a virus if you visit this site.
Google has found that malicious software may be installed onto your computer if you proceed. If you've visited this site in the past or you trust this site, it's possible that it has just recently been compromised by a hacker. You should not proceed. Why not try again tomorrow or go somewhere else?
We have already notified 79.170.44.102 that we found malware on the site. For more about the problems found on 79.170.44.102, visit the Google Safe Browsing diagnostic page.